Pencil.



PATENTBD APR. 9, 1907.

F. H. LIPPINGOTT.

PENCIL. APPLICATION FILED Nov. 27. 1906.

2 SHEETS-SHEET 2.

To ztZZ whom, it may cm1/cerrar UNITE STATES FISHER H. LIPPINOOTT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO AENT, OFFIG.

LIPPINCOTT PENCIL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

PENCIL.

Specification of Letters Patent.

Patented Aprii 9, iso?.

type the invention primarily aims to provide novel and im roved means for positively andsecurely hol ing thue insert against rearward movement in its holder.

The construction of my invention will appear from the following description, in which reference is had to the accom anying drawings, forming a part of this speci cation, like numerals designating corresponding parts throughout the several views, wherein* Figure 1 is a side elevation of a pencil constructed in accordance with my invention. Fig. 2 is a central longitudinal section thereof,

y showing a preferred embodiment of the in- ".ventioh. iii connection with av lead insert.

Fig. fr is a similar view, on an enlarged scale, showing a crayon insert. Fig.'y 4 is a central longitudinal section of a modilied embodiment of the invention, showing the use of a rubber insert for erasin purposes. Fig. 5 is a fragmentar longitu inal section showing a further Ino ified embodiment of the invention with a crayon insert. Fig. 6 is a transi verse section on the line 6 6 of Fig. 5. Fig. 7

is a similar view on the line 7 7 of Fig. 5, Figs. 8 and-9 are each central longitudinal sections of further modifications, showing the use of a lead insert. Fig. 10'is a fragmentary longitudinal section, on an enlarged shale, of a still further modiiication, showing the .use of a lead insert. Fig` 11 is a transverse section on the line 11 11 of Fig. 10 looking in the direction of the arrow, and Fig. 12 is a transverse section on the line 12 12 of Fig. 10 looking in the direction of the arrow.

Generally speaking, the invention principally resides in theA provision of a friction brake or stop-clutcli associated with an .in-

-struction shown in Figs. 10, l1, and l2.)

tral longitudinal bore 2, a pointed end 3, andr an ornamental end cap-plate 4. A longitudinal slot 5, passing through the side ofthe holder, communicates with the said bore, and

a longitudinal groove or recess 6 also communicates with said bore at a point diametrically opposite the slot 5, (except in the crpn insert 7 and a follower 8 (preferably rigidly and securely fastened thereto) are movably disposed in the bore 2, said slot and said recess serving as guides to receive portions of the follower and direct its longitudinal movement. The follower 8 in the preferred form of the invention comprises a rigid section of material, preferably of sheet metal, and means associated With said rigid section to prevent rearward movement. At its forward end the rigid section of the follower is provided with spaced parallel jawsQ, adapted to rigidly and securely hold a lead or other insert therebetween, and in its rear portion has an opening 10, provided with an upwardly-extending inclined lower edge 1. It is also provided with a projection or lug 12, which pplojects through the slot 5 and serves as a ger-piece by which said follower maybe moved forward within the holder 1.- The edge of the follower engaging the wall of the groove or recess 6 may be roughcned, if desired.

In the embodiment of the invention illustrated in Figs. 2 and 3y the opening 10 serves as a runway for a ball 13, which rides upon the inclined side l1 and bearsagainst thc surface of the ybore 2.

It is to be noted that the upper edge of the opening 10 is flush with IOO movement in the opcningl() by an expansive spiral spring 14, interposed between said hall and carried by or secured to the rear portion of the follower-8. 4

In Fig. 4 the opening 10n is of the same form as above described; but'for the ball 13 and spring 14 there is substituted a thimble or cup-shaped member 15, having a straight side 16, bearing against the wall of the bore 2, and an inclined side 17, riding upon the inclined side 11'L1 as a cam. The thimble 15 is moved forwardly in the opening 10a and with relation to the follower 8 by a retract ile spring 1S, having' one end secured to said member and its other end secured to a projection I9 adjacent the forward edge of the opening 10a. spring disposed rearwardly of the thimble 15, as shown in connection with the ball 13, may be employed. e

In the modified form of the invention shown in Figs. 5, 6, and 7 the follower 8h embodies the same basic priiiciples of cons 4struction and operation as has been described in connection with Figs. i) and 4, but differs therefrom as regards the construction of the portion of the follower which grasps the insert, as well as that of the braking device which. prevents the movement of saidv followerrearwardly. The forward portion of follower S in this modification may carry the arms l) and the projection or lug 12. For the opening 10 with its inclined edge is substituted a downwardijf-extending inclined surface 20, adjacent which is the depending arm 21. The braking element of the follower constitutes a brake-shoe 22, formed with an inclined upper surface 223, which is conformable to and bears against the,

surface 2l), the said brake-shoe being provided with a downwardly-extending rib 24, which interlits in the recess 6. The engaging surfaces of the parts may be roughened, if desired The brake-shoe is normally forced to the limit of its forwa d movement by an expansive spring 25, secured thereto and tothe depending arm 21.

In the embodiment of the invention illustrated-in Figs. 8 and l) thc-spring 14 is omitted and the weight of the` ball 13 or its contact with the sides ofthe bore 2 is relied upon to maintain it in position to perform its locking function while the pencil is in use. Suj'iplemental or auxiliary lot-.kingmeans are provided for assisting thel ball 13 in holding the follower S" against accidental rearward displacement. ln Fig. 8 this means is shown a single rearwzu'dly-intdined tooth 26, which bites into the material of the holder 1.

28, forming a serrated lower edge. for the follower 8". The teeth 28 bite into the material of the holder 1 in the same manner as the tooth 26.

Obviously an expansivcl ln Fie'. the auxiliar7 lockinT rs n. means comprises a plurality of aimed teeth The modified embodiment of the invention illustrated in Figs. 10, 11, and 12 differs from the constructions previously described in the omission of the recess 6 from lheholder. 1 and in an alteration in the form of the follower 8. Instead' of employing the jaws 9 an inte ral sleeve or cup 9 is provided, which prefere ly surrounds and frictionally grips the insert 7. The opening 10 is omitted, and the body portion of the follower is inclined upwardly and rearwardly to afford an inclined or cam edge 29, with which the ball 13 engages. The rear portion of the follower Sis provided with a depending leg 30 to prevent displacement of the ball 13. Between the leg 30 and the ball 13 the spiral springvlal, previously described, maybe advantageously interposed.

In practical use pressure upon the insert tends to move it rearwardly. This tendency is counteractcd by reason of the fact that such pressure causes the parts of the follower to slide upon each other, and in the consequent widening or expanding said parts are forced ouiward against portions of the holder, and thereby act as a friction brake Aor stopclutch io prevent the rearward movement of the follower. As the coacting clutch elements are. consiantly in frictionalA contact, it will be seen that while the follower will move forward freely the slightest pressure brought to bear upon the insert tending to move the follower rearwardly will instantly cause the relatively movable poriions of the follower to slide upon each other and force the same )L'ltwardly into a right frictiona'l engagement wi-.li the walls of die holder.

ln the cons'truciions shown in Figs. 1: to 9, inclusive, the jaws 9 and other portions of :he follower are engaged within lthe slot 5 and the recess 6, whereby ihe said follower can be moved forward evenly and smoothly and with no rendenc Y toward angular displacement with reference to .the insert 7. The jaws l) are. designed to frictionally and rigidly grasp the insert 7 at opposite points thereof, as is clearly shown in Fig. 7. It is preferred to employ a rigid sleeve. 31 to frictionally engage the insert wiihin the pointed end 3 to prevent any play thereof. This,while being a' desirable feature of construction, is, however, not an essential one.

Thile I have illustrated and described only a few forms or examples of my invention, iiis to be understood that such inven` tion is not limited thereto, but contemplates,

Sev

broadly, the features of'construction and arrangement hereinafter claimed.

Ilaving fully described my invention, I claim l. In a device of the character described an elongated holder provided with a longi` tudinal bore, an insert in said bore and a follower disposed rearwardly of said insert, said follower being adapted to be widened or expanded within said bore to bring portions thereof into frictional locking engagement with said holder upon the application of pre s- 1 sure tending to move 'followerrear;

2. In a device of the character described,

an elongated holder provided with a longiv tudinal bore,`and a slot extending through i the side of, said holder and communicating through said slot for moving said follower longitudinally of said bore.

3. In a device of the character described an elon ated holder provided with a longitudinal ore, and a follower in said bore having coacting parts adapted to be widened or expanded within said .bore into frictional locking engagement with said holder upon the application of pressure tending to move the said follower rearwardly, one of said coacting parts having a serrated or toothed portion adapted to be pressed against said holder.

`4. In a device of the character described an elongated holder provided with a longitudinal bore and a follower in said bore adapted to grasp a lead or other insert, said follower having one or more portions thereof adapted to move outward into frictional locking engagement withI said holder upon vthe application of pressure tending to move said follower rearwardly.

5. In a device of the character described an elongated holder provided with a longitudinal bore and a slot extending through vthe side of said holder and communicating with said bore, a follower .in said bore, frictional locking means embodied `in said follower adapted to be forced outwardly into frictional eontactwith the walls of said bore to prevent the rearward movement of said follower upon the application of pressure tendingv to movey the same rearwardly, and means extending through saif' slot for moving said follower longitudine/y of said bore.

6. In a levice of the character describedtion extending through said slot for moving' the follower longitudinally of said bore.

7. Inv a device of the `character described an elongated holder provided with a longitu ldinal bore and a slot extending through the side of said holder, and communicating :with

said bore, a follower insaid bore adapted to rasp a lead or other insert, said follower emodyingi i, braking element provided w1th an l inclined surface and a second braking element movable `Vwithvrelation to said` first named element and adapted. to be forced upwardlyalongsaid inclined surface to widen or expand the said parts into frictional locking engagement with the wallof'said bore upon.

the application of pressure tending to move said follower rearwardly and a 'projection carried by said follower and extending through the said slot for manipulating said follower.

8. In a device of the'type set. forth an elongated holder provided with alongitudinal bore and a slot extending through the side of said holder and communicating with said bore, a follower in said bore, said follower comprising relatively movable parts adapted to be moved outwardly to engagement with said holder upon the application of pressure tending to move said follower rearwardly, means for normally holding said relatively movable parts in frictional contact with said holder and means carried by said follower and extending through said slot for moving 'the follower longitudinally of said bore.

S). In a device of the character described, an elongated holder provided with a longi tudinal bore and a slot extending through the side of said holder and communicating with said bore, the wall of said bore being provided with a groove or recess extending lon-` gitudinally thereof, a follower in said bore having outstanding portions extending within said slot and within said groove or recess, and means extending through said slot for igioving the yfollower longitudinally of said ore.

10. In a device of the character described an elongated holder provided with a longi tudinal bore and a slot extending through the side of said holdeand communicating with said bore, the walls of said bore being pro, vided with a groove or recess extending longitudinally thereof at a point diametrically opposite the said slot, a follower having an outstanding rib at one side thereof engaged within said groove or recess and a projection carried by the opposite side of said follower extending through said slot.

11. In a device of the character described an elongated holder provided with a longitudinal bore and a slot extending through the side of said holder and communicating with said bore, the wall of said bore being provided with a longitudinal groove or recess opposite the said slot, an insert in said bore, a follower rearwardly disposed with reference to said insert, said follower being provided with means to rigidly hold said insert and follower together, said follower having portions thereof extending within and guided by said groove or recess and said slot and means extending outwardly through said slot for moving said follower longitudinally of said bore.

i 12. In a device of the character described,

IOO

a. holder provided with :L longitudinal bore l seid bore upon the application of presslg :md a slotv extending through the side ol' said tending to lnove the said follower rearwardlf', holder mid communicating with said bore, l and means extending through said slot for 15 the wall ol' said-bore heing provided with n. l moving szlvid follower longitudinally of said groove or reeess extendingi longitudinally ol' hore. v said bore opposite the said slot, :L follower in vi In testimony whereof I allix my signatug said slot adfzlplted to lgrasp u lozu or otlller ini- I in presence of two witnesses.

sert, smid o ower loving )or ions tlereo 1 Y, fv extending within the said groove or recess l BISHIA? H' LIPPIALOTI" and said slot, means carried hy said follower l adapted to he moved outwardlyY into friotionnl locking engugmnent with the wall of l \'Vitnesses: EMERSON CONRAD, IRENE MACKAY. 

